Port 6688

clever-tcpip · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceclever-tcpip
Registered2009-10-13

Frequently asked questions

What is port 6688 used for?

Port 6688 is registered with the IANA for clever-tcpip (TCP/UDP). Description: CleverView for TCP/IP Message Service; Reserved.

Is port 6688 a well-known port?

No. Port 6688 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 6688 is open?

Locally on Linux with ss -tulpn | grep ':6688\b', on Windows with netstat -ano | findstr :6688. To test a remote host use Test-NetConnection <host> -Port 6688 in PowerShell or nc -zv <host> 6688 on Linux/macOS.

How do I open port 6688 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 6688/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6688/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6688" -Direction Inbound -Protocol TCP -LocalPort 6688 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPclever-tcpipCleverView for TCP/IP Message Service
UDP–Reserved

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